https://doi.org/10.1140/epjc/s10052-023-11315-2
Regular Article - Theoretical Physics
CDF II W-mass anomaly faces first-order electroweak phase transition
1
Center for Theoretical Physics, College of Physics Science and Technology, Sichuan University, 610065, Chengdu, China
2
Laboratori Nazionali di Frascati INFN, Frascati (Rome), Italy
3
Center for Field Theory and Particle Physics, Department of Physics, Fudan University, 200433, Shanghai, China
4
Departamento de Física da Universidade de Aveiro and Centre for Research and Development in Mathematics and Applications (CIDMA), Campus de Santiago, 3810-183, Aveiro, Portugal
5
Department of Astronomy and Theoretical Physics, Lund University, 223-62, Lund, Sweden
Received:
30
August
2022
Accepted:
12
February
2023
Published online:
10
March
2023
We suggest an appealing strategy to probe a large class of scenarios beyond the Standard Model simultaneously explaining the recent CDF II measurement of the W boson mass and predicting first-order phase transitions (FOPT) testable in future gravitational-wave (GW) experiments. Our analysis deploys measurements from the GW channels and high energy particle colliders. We discuss this methodology focusing on the specific example provided by an extension of the Standard Model of particle physics that incorporates an additional scalar 
triplet coupled to the Higgs boson. We show that within this scenario a strong electroweak FOPT is naturally realised consistently with the measured W boson mass-shift. Potentially observable GW signatures imply the triplet mass scale to be TeV-ish, consistently with the value preferred by the W mass anomaly. This model can be tested in future space-based interferometers such as LISA, DECIGO, BBO, TianQin, TAIJI projects and in future colliders such as FCC, ILC, CEPC.
© The Author(s) 2023
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